Becker 1984.

Methods	Randomised, parallel‐arm trial comparing adverse effects and efficacy of transdermal scopolamine with oral meclozine for preventing motion sickness in an artificial sea voyage
Participants	46 healthy, male marines aged 18 to 27 years. 19 displayed susceptibility to motion sickness in a pre‐experiment
Interventions	Transdermal scopolamine or oral meclozine tablets taken prior to an artificial sea voyage
Outcomes	Motion sickness score. Digestibility of treatment.
Notes	Schulz rating: randomisation B; allocation concealment A; selection bias B; blinding A
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment (selection bias)	Low risk	A ‐ Adequate